3997891064654 has 16 divisors (see below), whose sum is σ = 6044166256128. Its totient is φ = 1983169554912.

The previous prime is 3997891064599. The next prime is 3997891064663. The reversal of 3997891064654 is 4564601987993.

3997891064654 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18556052 + ... + 18770264.

It is an arithmetic number, because the mean of its divisors is an integer number (377760391008).

Almost surely, 2^{3997891064654} is an apocalyptic number.

3997891064654 is a deficient number, since it is larger than the sum of its proper divisors (2046275191474).

3997891064654 is a wasteful number, since it uses less digits than its factorization.

3997891064654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287819.

The product of its (nonzero) digits is 352719360, while the sum is 71.

The spelling of 3997891064654 in words is "three trillion, nine hundred ninety-seven billion, eight hundred ninety-one million, sixty-four thousand, six hundred fifty-four".